Hotone Ampero with Linux

Hotone Ampero MP100 working via USB on Linux with Jack and Ardour.
But the idea is that I have no latency since I plug my headphone in the Ampero and use it as a monitor as well.
By the way, if you are not using QJack, here is how you can simply launch everything:
nperiods 3 is recommended for USB
jack_control ds alsa
jack_control dps device hw:PRODUCT
jack_control dps rate 44100
jack_control dps period 256
jack_control dps nperiods 3
jack_control start
Add Alsa to MIDI (if you want to change Ampero patches from your PC)
a2j_control --ehw
a2j_control --start
Tell PulseAudio use Jack as output (See Gnome settings)
pactl set-default-sink jack_out